I mix 1 ounce of 10% Permethrin and 20 ounces of water together in a bucket and throw my hunting pants and shirt in it. Let it soak a bit then wring the clothes out. Place them on a flat surface covered with a plastic garbage bag. Allow the Permethrin soaked clothes to dry, turning them over frequently. Put them on a hanger and hang it somewhere where air can circulate around the clothes and let them hang for several days. The smell will disappear and you are ready to go. This technique treats the clothes thoroughly and prevents the solution from travelling to the cuff/waist and leaving areas with just a trace.
Ticks used to be a regular problem, but since I started soaking, not just spraying, my clothes, I have found 0 ticks on my body.
The instructions on OG concerning making the mix are pretty clear. Much cheaper than buying spray.
Good luck.
FC